He was on IRC last night and still on now. I asked him if it was gpuMax and he said yes. Just trying to roll the dice and hit on some blocks is the impression I got. I don't want to speak for him though. He seems like a good guy and I'm guessing he will answer your question if you ask him.

Live stats for current NMC round is not displaying correctly. Working on that now.

Now working again. Found a race condition in the resetting of round stats. Low chance of being triggered, but it was now. Working on fixing the code. Shifts and payments are unaffected, but block rounds not resetting properly can cause wrong statistics.

I had to parallelize the backend more when the first test runs with GPUmax uncovered some bottlenecks. The code is now extremely fast and efficient. The downside is that parallel code is very hard to test and debug. The codebase should stabilize now, though, as I believe it can take us well over 1000 GH/s without changes.